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Unformatted text preview: I nnate Behaviors and Dominance H ierarchies in Crickets Michael Cobb 4/1/09 Sgt. Devin T readaway, USMC “I have complied with all rules of the academic integrity while preparing this report” I ntroduction Females of many species are known to prefer dominant males to ensure that strongest, and fittest will survive. Because of this in nature many males strut and show off to the females what they have to offer and the female will choose the most successful male out of the group (Rantala, 2002). This does not mean that the weakest males don’t mate, they just get picked last by the rest of the females and, over time, the weak male’s genetics fade out of the species entirely. This is what Darwin called survival of the fittest, the strong males with the most potential will pass on their genes and the weak ones will not, making sure to preserve the integrity of the species. Some animals, for example the Peacock, will dance for the female Peafowl’s displaying an array of colored eyes, the brighter and prettier the eyes on the Peacock’s feathers the healthier the bird is and is more apt to mate (Power point). Other animals like Wolf’s have dominance hierarchies in which there is an alpha male and female, and it ensures that the strongest male (the alpha male) gets to mate and eat more to pass on his successful genes into the pack. The reign of the alpha male is usually short lived as he is battled constantly in efforts of other males to show that they deserve to be alpha male of the pack, and this ensures the strongest genes are the ones populating the species....
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This note was uploaded on 11/08/2009 for the course BIOL 1100 taught by Professor Warner during the Spring '09 term at UNC Charlotte.
- Spring '09